Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

25. The Urinary System

Introduction to the Urinary System

Anatomy & Physiology

25. The Urinary System

Introduction to the Urinary System

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Multiple Choice

Which part of the renal tubule is lined with cuboidal epithelial cells bordered by dense microvilli?

Distal convoluted tubule

Loop of Henle (nephron loop)

Proximal convoluted tubule

Collecting duct

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Verified step by step guidance

Understand the structure and function of the renal tubule: The renal tubule is divided into several segments, including the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct. Each segment has distinct histological features and functions.

Learn about cuboidal epithelial cells: Cuboidal epithelial cells are cube-shaped cells that are commonly found in areas of the body where absorption and secretion occur. In the renal tubule, these cells play a critical role in reabsorbing substances from the filtrate.

Focus on microvilli: Microvilli are small, finger-like projections on the surface of epithelial cells that increase surface area for absorption. Dense microvilli are characteristic of cells that perform extensive reabsorption, such as those in the proximal convoluted tubule.

Identify the proximal convoluted tubule: The proximal convoluted tubule is the first segment of the renal tubule, located immediately after the glomerulus. It is lined with cuboidal epithelial cells that have dense microvilli, which facilitate the reabsorption of water, ions, and nutrients from the filtrate.

Compare with other segments: The distal convoluted tubule, loop of Henle, and collecting duct have different histological features. For example, the distal convoluted tubule has fewer microvilli, the loop of Henle has thin and thick segments with varying cell types, and the collecting duct is involved in water reabsorption and is lined with cuboidal or columnar cells without dense microvilli.